Refrigerating system



June 15 1926.

F. WITTENMEIER REFRIGERATING SYSTEM Filed August 28. 1922 'UNITED 4S'TAVES .PATENT OFFICE..

FRED 1WITTEN'MlEfI'FR, OF CHICAG, ILLINOIS. g

BEFBIGERATING SYSTEM.

Application filed Ausg-ust 28j, 1922'. Serial No. 584,787.

This invention relates to a new and irnprovcd refrigerating system :and more particularly to a system for the circulation of cooling fluidin installations in which a 5 plurality .of cooling coils .are located at separated points.

ln modern building construction it has become the practice to supply central refrigerating systems which operate .at dii-ferent points throughout The general practice in dis- .luid has required the use of .the fluid to the top of .the

service pipes con- -coils located the building. tributing this pipes to carry building and a pair of refrigerating `nected .to each coil .or column of coils located .approximately vertically above each other on different floors Of these two service pipes. one

of the building. .has carried the cooling lluid to the coils fand the other has served as a return pipe to receive the fluid from the coils and carry back to the cooling and circulating machinery.

Since these pipes carry a perature very considerably fluid at a tembelow that of the atmosphere, it is necessary that they be com .pletely covered by substantially heat casing. This renders the proof provision oi the two pipes in connection with each series of coils a very considerable expense.

Further,

`the pipes with their covering take up a very considerable amount of space.

It is an object of the present invention to provide a system in which a `single service pipe conveys the iluid to a set of coils and the same pipe serves to .carry away the fluid from the coils".

It is a further object to provide vmeans whereby the ilow of fluid from the service pipe to each coil may lated.

It is an additional object be independently reguto provide a sys# tem in which the flow vof the fluid through the service pipe serves to `aid in drawing the fluid from the coils.

It is also an object to provide a system which is simple and requires a minimum amount of pipes and fittings and which may be installed without involving large amount of wall or pa Other and the description proceeds.

n the use of a rtition space.

further objects will appear as Broadly, my invention comprises a s ystem involving a plurality fed with cooling fluid from .above by means Each service pipe of a single large riser. has connected thereto .a .p

of service pipes lurality of coils,

pipe at points l 'has screwed therein the plug 17 which serves each ycoil having both ends connected to lthe same pipe. ln the .preferred form, adjustable means are provided extending into the service pipe adjacent the entrance to the coil and adapted to control the amount of flow from the service pipe to the coil. The lower end of the coil is preferably connected to the service pipe at an angle sloping downwardly toward the pipe soy that flow in the service pipe aids vin drawing the iluid through the coil.

l have illustrated a certain preferred 1embodimentof my invention in the accompany- .ing drawings, in which :l I

Figure 1 is a somewhat diagrammatic elevation showing the relation of the units in the system;

Figure 2 is an elevation on an scale showing a sing-le unit.;

Figure f5 is a sectionshowing the -construction in detail;

enlarged lt will be understood that the tank and pump as shown arediagrammatic and that Figure 4i is a transverse section taken on From the flipper. cmd ci the any refrigerating system and circulating means may be used.

The Ts 12 are placed in the service pipes 10 .and are connected by 'pipes 13 and littings l14: to the upper end of the coils 15. -r[he lower ends .of the coils 15 are connected through the angle fitting V16 to the service below the Ts 12. The `T 12 to reduce the size of the lateral opening of the T and to secure the pipe 113 therein.

VPivoted to this plug 17 at point 18 is the deiiecting vane 19. The adjusting rod 20 has one end connected. to the vanel 19 and the other end passes out through the iitting 14 and is provided with operating button 21.

The' fitting 14 is provided with the gland 22 adapted to compress the packing 23 to prevent leakage around the rod 20. Thepacking may also be compressed sufficiently 'to clamp the rod. 2O in adjusted position.

As clearly 'showninFigure l, the deflecting vane 19 is of smaller area than the inner cross sectional area oi the Tl 12 and l'when in its fullyl opened position, will serve to deflect only a portion of the fluid from the service pipe to the coil. The T 12 is preferably recessed at 24 so that when the vane 19 is in its closed position, the service pipe is entirely cleared by the vane. When in this position, the vane is of an area sufficient to substantially close off the entrance of the coil.

In the operation of the system, the cooling fluid will be forced upward to the top of the building through the riser 9 and will be distributed from one riser to a plurality of service pipes 10. These service pipes extend down through the building and a cooling coil will be ordinarily connected to each pipe upon each floor of the building. These risers'and service pipes are protected by heat proof sheathingr and are normally enclosed in the walls of the building as shown in Figure 2. The pipes 13 and fittings 14 will project out of the wall and the coil 15 will be placed in a refrigerator indicated at 25, which refrigerator may be of any desired construction.

In order to secure the desired cooling effeet, it will be necessary to make different adjustments of the vanes 19 upon the controlling coils upon different floors connected to the same service pipe. Vhen the proper adjustment is determined, the rod 2O may he clamped in adjusted position by tightening up the gland 22. Since the vane 19 is smaller in area than the opening in the service pipe, it is impossible to by-pass all of the fluid through any one coil. Thus adequate cooling effect is assured the coils located lower in the building even if the upper vanes should be improperly adjusted. Since the fluid flows back to the service pipe at a downwardly extending' angle, the effect of the flow down through the service pipe is increased and it will aid in drawing the fluid through the coil.

By the use of this system, the second or discharge pipes commonly associated with each series of coils are entirely eliminated. This accomplishes a very material reduction in the cost of installation of such systems, simplifies the operation and maintenance, and reduces heat losses. By the means of my adjustable vanes, the system can be adequately controlled and proper cooling effect may be given to each coil regardless of its location in relation to other coils.

The particular embodiment of my invention illustrated is Iby way of example only and I reserve the right to make such changes and modifications as come wit-hin the scope of the appended claims.

I claim:

1. In a refrigerating system, means for circulating a cooling fluid, a riser, a plurality of downwardly extending service pipes connected to the upper end of said riser, return pipes connecting said service pipes to the circulating means, cooling coils connected at each end to a service pipe and means adapted to deflect a portion of the fluid in the service pipe through the cooling coil.

2. In a refrigerating system, means for circulating a cooling fluid, a riser, a plurality of downwardly extending service pipes connected to the upper end of said riser, return pipes connecting' said service pipes to the circulating means, a cooling coil connected at each end to a Service pipe and means adjustably extending into the service pipe and adapted to deflect a portion of the fluid in the service pipe through the cooling coil.

3. In a refrigerating system, a service pipe, connections for supplying cooling fluid to said pipe and withdrawing the fluid from said pipe, cooling coils connected at each end to the service pipe, and a4 deflecting vane adapted to deflect a portion of the fluid in the service pipe to the cooling coil.

t. In a refrigerating system, a service pipe, connections for supplying cooling fluid to said pipe and withdrawing the fluid from said pipe, cooling coils connected yat each end to the service pipe, and a deflecting vane hinged in the service pipe adjacent the opening therefrom to the cooling' coil and adapted to deflect a portion of the fluid in the service pipe to the cooling' coil.

5. In a refrigerating system, a service pipe, connections for supplying cooling` fluid to said pipe and withdrawing the fluid from said pipe, cooling coils connected at each end to the service pipe, and a deflecting vane adapted to deflect a portion of the fluid in the service pipe to thecooling coil, means for adjusting the posit-ion of said vane and means for maintaining the adjusting means in adjusted position.

6. In a refrigerating system, a service pipe, connections for supplying cooling fluid to said pipe and withdrawing the fluid from said pipe, cooling coils connected at each end to the service pipe, and adjustable means adapted to deflect a portion of the fluid in the service pipe through the cooling coil, said means in. one position substantially closing olf the entrance. from the service pipe to the cooling coil.

7. In a refrigerating system, a service pipe, connections for supplying cooling fluid to said pipe and withdrawing the fluid from said pipe, cooling coils connected at each end to the service pipe, and adjustable means` adapted to deflect a portion of' the fluid in the service pipe through the cooling` coil` said means being less in area than the cross sectional area of the service pipe and adapted in its fully open position to permit flow through the service pipe.

Signed at Chicago, Illinois, this 6th day of August, 1922.

FRED VVITTENMEIEII. 

